Here you can find the source of dateToString(Date date, String format)
public static String dateToString(Date date, String format)
//package com.java2s; //License from project: Open Source License import java.text.SimpleDateFormat; import java.util.Date; public class Main { public static final String DF_YMD = "yyyy-MM-dd"; public static String dateToString(Date date, String format) { if (date == null) { return ""; }// www . j a v a 2 s . co m synchronized (date) { SimpleDateFormat df = new SimpleDateFormat(format); return df.format(date); } } public static String dateToString(Date date) { return dateToString(date, DF_YMD); } }